Optics: measuring and testing – Inspection of flaws or impurities
Patent
1997-11-13
1999-12-28
Font, Frank G.
Optics: measuring and testing
Inspection of flaws or impurities
G01N 2101
Patent
active
060088915
ABSTRACT:
An automatic flaw removing method for long materials, comprises the steps of: inspecting long materials, such as round-bar steels and steel pipes, for surface flaws by a flaw inspecting apparatus of all section to divide the long materials into rejected materials having a flaw(s) and accepted materials having no flaw; storing information on the longitudinal position and length of each of the flaws of the rejected materials in a storage unit; sequentially carrying out the tracking of each of the rejected materials; moving a circumferential flaw probe directly connected to a grinder, to a longitudinal coordinate position of each of the flaws of the rejected materials, on the basis of the information on the longitudinal position of each of the flaws stored in the storage unit, when each of the rejected materials arrives at a flaw grinding position; rotating each of the rejected materials; identifying a circumferential position of each of the flaws by picking up a flaw indicative signal by the circumferential flaw probe; and automatically grinding each of the rejected materials, on the basis of the information on the identified circumferential position of each of the flaws and the information on the longitudinal position and length of each of the flaws stored in the storage unit. Thus, it is possible to interlock a high-speed automatic flaw inspecting apparatus with an automatic grinder to automatically remove surface flaws of long materials.
REFERENCES:
patent: 4126491 (1978-11-01), Karlsson
patent: 4495587 (1985-01-01), Plante et al.
patent: 4633620 (1987-01-01), Lorenzi et al.
patent: 5656786 (1997-08-01), Curtis, Jr. et al.
Kawamura Koji
Kobayashi Hiroto
Nakakusu Minoru
Tamura Yoshitomo
Font Frank G.
Sanyo Special Steel Co., Ltd.
Stafira Michael P.
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